Is Glass Wool the same as polyester and cellulose fibre insulations?
No. Totally different technology and fibre chemistry. Glass Wool fibre is manufactured from abundant natural minerals (e.g. sand). Polyester is a totally synthetic fibre made from chemical derivatives of oil industry products. Cellulose fibre is made mainly from waste paper Glass Wool fibres are superior thermally and acoustically and have better fire performance. Glass Wool fibres have been thoroughly researched over the last 50 years. Unaware of any substantive research on the health effects of polyester or cellulose fibre insulations. To date they have not been subject to scrutiny and have insufficient data to give an opinion.
